What are the limits?

https://www.lds.org/youth/video/chastity-what-are-the-limits?lang=eng

Acting on Faith

No matter who we are or where we live, there is much about our daily lives that is routine and repetitive. As we go about this dailiness, we must be deliberate about doing the things that matter most. These must-do things include making room first for the minimum daily requirements of faithful behavior: true obedience, humble prayer, serious scripture study, and selfless service to others. No other daily vitamins strengthen the muscles of our faith as fast as these actions. We also must remember that genuine fasting fosters strong faith. This is especially important as we faithfully seek to fix deeply embedded character flaws which go “not out but by prayer and fasting.”¹⁶

 

Developing faith in the Lord Jesus Christ is a step-by-step, line-upon-line, and precept-upon-precept process. We promote the process of strengthening our faith when we do what is right—increased faith always follows as a consequence.¹⁷ If we exercise our faith daily with prayer, study, and obedience, the Savior helps our unbelief, and our faith becomes a shield to “quench all the fiery darts of the wicked.”¹⁸ Alma taught that we may “withstand every temptation of the devil, with [our] faith on the Lord Jesus Christ.”¹⁹ However, we can neither ignore nor reject the essential ingredients of faith and then expect to reap a rich harvest.

 

Elder L. Whitney Clayton

Of the Seventy

 

https://www.lds.org/liahona/2002/01/help-thou-mine-unbelief?lang=eng

Our Code of Conduct

"As taught in this scripture D&C 132:19, an eternal bond doesn’t just happen as a result of sealing covenants we make in the temple. How we conduct ourselves in this life will determine what we will be in all the eternities to come. To receive the blessings of the sealing that our Heavenly Father has given to us, we have to keep the commandments and conduct ourselves in such a way that our families will want to live with us in the eternities."

Robert D. Hales, "The Eternal Family"
http://www.lds.org/general-conference/1996/10/the-eternal-family?lang=eng&query=*+(name%3a"Robert+D.+Hales")